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STATE OF WISCONSIN INVESTMENT BOARD — 13F Holdings & Portfolio

CIK 854157 · latest 13F-HR filed 2026-08-14

Backtest portfolio

STATE OF WISCONSIN INVESTMENT BOARD manages $49.55B in 13F-reported U.S. long-equity assets across 2,529 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are NVDA (4.98%), AAPL (4.57%), RSP (3.21%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 222 new positions and exited 182; 1,351 existing positions rose in reported value and 662 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM
$49.55B

Long-equity book

Holdings
2,529

Distinct positions

Period
2026-06-30

Filed 2026-08-14

Q/Q Activity
+222 / −182 / ↑1351 / ↓662

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26
NVDA5.0% · -5%AAPL4.6% · -1%RSP3.2% · +13%MSFT2.8% · -1%AMZN2.5% · -0%GOOGL2.2% · -1%GOOG2.2% · +20%AVGO1.8% · -2%MU1.4% · -0%META1.3% · +0%TSLA1.3% · -1%HEI.A1.1% · +48%LLY1.0% · -1%AMD1.0% · -1%JPM0.9% · -2%HAPI0.9% · 0%BRK.A0.9% · -10%BRK.B0.8% · +1%FOX0.8% · +2%INTC0.7% · -8%JNJ0.7% · -1%V0.6% · -2%AMAT0.6% · -2%XOM0.6% · -2%LRCX0.6% · -4%BKLN0.6% · +207%ISTB0.5% · +2%WMT0.5% · -0%CAT0.5% · -2%CSCO0.5% · -3%ABBV0.5% · -1%MA0.5% · -3%COST0.4% · -2%KLAC0.4% · +817%GE0.4% · -5%BAC0.4% · -1%SNDK0.4% · +2%UNH0.4% · -0%NWSA0.4% · +1%HD0.4% · -0%PG0.4% · -1%EEM0.3% · -2%HAPS0.3% · 0%MRK0.3% · -3%KO0.3% · -5%GEV0.3% · -7%CVX0.3% · -4%NFLX0.3% · -2%GS0.3% · -3%PM0.3% · -1%ARKK0.3% · -37%PANW0.3% · -8%TXN0.3% · -2%MRVL0.3% · +8%EFFE0.3% · 0%IBM0.3% · -1%EFFI0.3% · 0%RTX0.3% · -1%PLTR0.3% · -6%WFC0.3% · -3%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 27.1%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

Name Title / Status Ownership Type

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

STATE OF WISCONSIN INVESTMENT BOARD Holdings (2026-06-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 NVIDIA CORPORATION NVDA 67066G104 $2.47B 4.98% 12,328,989 SH
2 APPLE INC AAPL 037833100 $2.27B 4.57% 7,830,625 SH
3 INVESCO EXCHANGE TRADED FD T RSP 46137V357 $1.59B 3.21% 7,468,879 SH
4 MICROSOFT CORP MSFT 594918104 $1.41B 2.84% 3,767,812 SH
5 AMAZON COM INC AMZN 023135106 $1.23B 2.48% 5,164,201 SH
6 ALPHABET INC GOOGL 02079K305 $1.11B 2.24% 3,105,936 SH
7 ALPHABET INC GOOG 02079K107 $1.10B 2.22% 3,114,324 SH
8 BROADCOM INC AVGO 11135F101 $913.1M 1.84% 2,417,133 SH
9 MICRON TECHNOLOGY INC MU 595112103 $694.3M 1.40% 601,531 SH
10 META PLATFORMS INC META 30303M102 $659.8M 1.33% 1,171,368 SH
11 TESLA INC TSLA 88160R101 $631.4M 1.27% 1,501,177 SH
12 HEICO CORP NEW HEI.A 422806208 $546.3M 1.10% 2,118,107 SH
13 ELI LILLY & CO LLY 532457108 $513.6M 1.04% 428,209 SH
14 ADVANCED MICRO DEVICES INC AMD 007903107 $506.1M 1.02% 871,173 SH
15 JPMORGAN CHASE & CO JPM 46625H100 $468.2M 0.94% 1,430,418 SH
16 HARBOR ETF TRUST HAPI 41151J877 $438.2M 0.88% 9,871,200 SH
17 BERKSHIRE HATHAWAY INC DEL BRK.A 084670108 $426.1M 0.86% 569 SH
18 BERKSHIRE HATHAWAY INC DEL BRK.B 084670702 $374.1M 0.76% 747,711 SH
19 FOX CORP FOX 35137L204 $373.9M 0.75% 7,982,174 SH
20 INTEL CORP INTC 458140100 $333.0M 0.67% 2,384,964 SH
21 JOHNSON & JOHNSON JNJ 478160104 $326.2M 0.66% 1,284,259 SH
22 VISA INC V 92826C839 $307.5M 0.62% 896,404 SH
23 APPLIED MATLS INC AMAT 038222105 $306.0M 0.62% 423,289 SH
24 EXXON MOBIL CORP XOM 30231G102 $303.0M 0.61% 2,216,423 SH
25 LAM RESEARCH CORP LRCX 512807306 $297.4M 0.60% 686,377 SH
26 INVESCO EXCH TRADED FD TR II BKLN 46138G508 $288.6M 0.58% 14,170,000 SH
27 ISHARES TR ISTB 46432F859 $267.8M 0.54% 5,549,725 SH
28 WALMART INC WMT 931142103 $264.9M 0.53% 2,338,988 SH
29 CATERPILLAR INC CAT 149123101 $264.2M 0.53% 248,082 SH
30 CISCO SYS INC CSCO 17275R102 $250.1M 0.50% 2,129,342 SH
31 ABBVIE INC ABBV 00287Y109 $237.4M 0.48% 943,411 SH
32 MASTERCARD INCORPORATED MA 57636Q104 $228.9M 0.46% 445,731 SH
33 COSTCO WHOLESALE CORPORATION COST 22160K105 $221.4M 0.45% 236,660 SH
34 KLA CORP KLAC 482480100 $210.9M 0.43% 699,073 SH
35 GE AEROSPACE GE 369604301 $208.5M 0.42% 557,982 SH
36 BANK OF AMER CORP BAC 060505104 $208.1M 0.42% 3,651,625 SH
37 SANDISK CORP SNDK 80004C200 $206.3M 0.42% 90,739 SH
38 UNITEDHEALTH GROUP INC UNH 91324P102 $201.3M 0.41% 484,304 SH
39 NEWS CORP NEW NWSA 65249B109 $189.9M 0.38% 7,648,820 SH
40 HOME DEPOT INC HD 437076102 $187.4M 0.38% 531,495 SH
41 PROCTER & GAMBLE CO PG 742718109 $181.8M 0.37% 1,239,490 SH
42 ISHARES TR EEM 464287234 $169.7M 0.34% 2,480,428 SH
43 HARBOR ETF TRUST HAPS 41151J851 $169.7M 0.34% 4,520,000 SH
44 MERCK & CO INC MRK 58933Y105 $169.5M 0.34% 1,318,963 SH
45 COCA COLA CO KO 191216100 $169.4M 0.34% 2,084,840 SH
46 GE VERNOVA INC GEV 36828A101 $169.4M 0.34% 144,196 SH
47 CHEVRON CORPORATION CVX 166764100 $163.5M 0.33% 986,154 SH
48 NETFLIX INC. NFLX 64110L106 $161.5M 0.33% 2,261,921 SH
49 GOLDMAN SACHS GROUP INC GS 38141G104 $159.1M 0.32% 157,357 SH
50 PHILIP MORRIS INTL INC PM 718172109 $150.4M 0.30% 831,420 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-14 $49.55B 2,529 0001062993-26-004375
2026-03-31 2026-05-15 $43.70B 2,491 0001062993-26-002676
2025-12-31 2026-02-17 $44.74B 2,365 0001062993-26-000957
2025-09-30 2025-11-14 $43.62B 2,366 0001062993-25-016783
Filer Information
Address
4703 MADISON YARDS WAY, SUITE 700
MADISON, WI 53705
Phone
(608) 266-2381
Filing Manager
STATE OF WISCONSIN INVESTMENT BOARD
MADISON, WI
Signatory
LISA LANGE
DIRECTOR OF COMPLIANCE & SENIOR LEGAL COUNSEL